Hi, I saw your recent post so I'm checking this one out.
I am not in charge of finding audio files.
There are a lot of sounds in the game, both fauna and ambient. We are generally reserved about what audio we put into a playable format for the wiki. This usually includes: Audio logs, PDA warnings, Creature sounds uploaded to soundcloud, etc.
I believe due to the sheer quantity of files that would have to be uploaded to the wiki for a majority of both games, as well as formatting reasons. (And I do not know if the playable audios are mobile friendly, which does matter). I doubt we'll have any plans in the foreseeable future to do a full audio overhaul for the wiki.